What is Laser Line Generator?

Laser Line Generator is a common high-precision measurement equipment, which uses the straightness and stability of the laser beam to achieve high-precision measurement and is widely used in machining, the electronics industry, optical manufacturing, and other fields. Below I will make a comprehensive introduction to the line laser.

1. Definition

There are two types of Laser Line Generator: one is used to form a straight line in a plane, and the other is used to form a straight line in space. In general, the one-line laser we say refers to the planar one-line laser. Planar line laser is a parallel light reflected through the lens and mirror to form a straight line in the plane, mainly composed of the light source, regulator, and receiver, with high precision, high speed, high efficiency, and easy operation.

2. The working principle

In a line laser, the laser light emitted by the light source passes through the lens so that it becomes parallel light, and then reflects through the mirror to form a straight line. The mirror can be moved up and down, left and right, back and forth, and its position can be adjusted to adjust the line to the desired position. By controlling the position of the mirror, straight lines, and cross lines can be formed in the field of view.

3. Characteristics

⑴. High precision: Due to the linearity of the laser beam itself, the measurement accuracy of the one-line laser is very high.

⑵. High speed: The working speed of a line laser is very fast, which can greatly improve production efficiency.

⑶. High efficiency: The installation and adjustment of the line laser are very simple, very convenient to use, can quickly complete the measurement task, and improve production efficiency.

4. Easy operation

The operation of a line laser is very simple, no professional skills or training is required, and anyone can easily use it.

5. Laser Line Generator Application

Single-line lasers are widely used in various precision machining, measurement, and other fields, such as:

⑴. Mechanical manufacturing: used to test the accuracy error of motor, pinion, level, etc.

⑵. Electronics industry: used for lens center calibration, quality control, semiconductor production, computer shell assembly, and adjustment.

⑶. Optical manufacturing: microscopic observation and inspection in the manufacturing process of lenses, masks, and filters.

⑷. Textile processing: used to check various textiles and marks.

⑸. Others: Used for level calibration, highway construction, civil construction measurement, and other fields.

6. Laser Line Generator Classification

We often say that one-line lasers can be divided into two kinds, one is a conventional one-line for marking and positioning, and one is used for high-performance machine vision. What's the difference between the two?

⑴.A laser line marking device is a convenient and practical positioning tool. It can be widely used for efficient clothing laser positioning, clothing button point light source positioning, cloth cutting machine auxiliary marking, clothing hem laser marking positioning, sewing machine/cutting machine/button machine/automatic manual cloth breaking machine auxiliary marking positioning, etc.

Convenient, quick, intuitive, and practical. Can greatly improve work efficiency. The line laser line is clear, small, easy to install, and can provide supporting products and technical support for various clothing equipment manufacturers. Features: The installation and use of a one-word laser marking device are simple and convenient, can be installed on the vertical or horizontal surface of the use of machinery, providing a visible laser marking line, so that there is a visible, non-contact positioning line to guide the operation process during the entire production process. It has the advantages of convenient production operation and improving production efficiency. The laser line can be fine-tuned arbitrarily in three-dimensional space, which has achieved the best-use effect.

⑵.Machine vision line lasers are high-performance, high reliability, and widely used in a variety of 2D/3D vision applications and inspection systems. With the use of high-quality lenses, with cylindrical/wave mirror, Powell prism, and DOE diffraction element, the emission line effect is good. High precision, and good line uniformity. Professional for visual applications, fine fringes, uniform power distribution, clear edges, maximize the imaging resolution and accuracy of visual applications. Can provide different wavelengths, and different power of the line laser. The products are easy to integrate, highly reliable in construction, and can be easily combined with a variety of vision systems to achieve a variety of machine vision applications to meet the various needs of customers.

7. How to choose Laser Line Generator?

The devices that can generate one-line laser include column mirror/wave mirror, Powell prism, and DOE diffraction element, which are common. The device materials are plastic and glass. Among them, the first two methods belong to the content of geometric optics, DOE belongs to the technology of diffraction optics, they each have advantages and disadvantages. We focus on the Powell prism-based line laser, and other methods to generate line products, and do not recommend or even oppose the use of industrial machine vision, especially in the field of 3D measurement.

Online circulation of the Powell prism to achieve the principle diagram of the beamline, you can see that the Powell prism has a curved ridge, the ridge curve processing quality will determine the quality of the line laser. If you are familiar with Zemax, simulate the distribution function of the ridge curve and compare it with the column mirror to understand the difference. It doesn't matter if you're not familiar with it, remember that of the three methods, the Powell prism is king.

You'll see a lot of machine vision projects with red lights. Blue light has better recognition on the surface of metal materials. The wavelength of green light is between red and blue, and the human eye is the most intense perception, the power is very small green light human eye perception will feel the brightness is very high, hope that the human eye's perception of strong scenes green light is, of course, the first choice, but do not want the human eye to perceive the scene, then choose 800~940 nm such as the invisible laser.

In short, a line laser is a very important precision measurement equipment, with high precision, high speed, high efficiency, and easy-to-operate characteristics. It has a wide range of application prospects in machining, electronics industry, optical manufacturing, and other fields, and will become an important part of future industrial development.

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